铁路货车焊缝疲劳数据可视化系统开发与应用  

Development and Application of a Visualization System for Fatigue Data of Wagon Welded Joints

作　　者：周韶泽[1,2] 陈栋[1] 聂春戈[1] 李向伟 兆文忠[1] 宗振龙[1] 

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028 [2]中车齐齐哈尔轨道交通装备有限责任公司,黑龙江齐齐哈尔161002

出　　处：《大连交通大学学报》2017年第4期187-191,共5页Journal of Dalian Jiaotong University

基　　金：辽宁省自然科学基金资助项目(20170540137);辽宁省教育厅高等学校科学研究计划资助项目(L2014182)

摘　　要：为了解决目前铁路货车焊缝疲劳数据管理效率低,难以满足产品快速抗疲劳设计需求的问题,研究并开发了集三维可视化模型,焊缝疲劳计算,虚拟疲劳、试验测试的焊缝疲劳评估数据管理于一体的三维可视化系统.为了实现该系统,提出了基于场景图的CAD/CAE可视化模型装配树;研究并嵌套了试验测试等效应力幅焊缝疲劳评估算法;提出了基于面向焊缝对象的可视化方法、MVC模式数据映射技术,建立了主S-N曲线法、IIW名义应力法、等效应力幅法焊缝疲劳评估数据与焊缝模型的双向映射.最后以C70E车体焊缝疲劳设计作为实例,证明了该软件系统的有效性及实用性.In order to solve the problem that the current efficiency of fatigue data management of wagon welded joints is too slow to meet the demand of rapid fatigue design, a 3D visualization system which integrates the virtual model, the fatigue calculation method for weld joints and weld joints fatigue assessment data from virtu- al and real fatigue test is studied and developed. For the system, an assembly tree structure based on Scene Graph for a CAD/CAE visual model, a weld joint-object-oriented visualization method and a data mutual-map- ping technique based on MVC model are proposed. In addition, the equivalent stress amplitude calculation algorithm was integrated to the system and the weld joints fatigue data of master S-N curve method. The IIW nominal stress method and the equivalent stress amplitude method is mapping to the weld joints model with the methods above. Finally, a welded joints fatigue design of the C70E wagon car body is taken as an example was used to prove the validity and usefulness of the software system.

关 键 词：货车设计 焊缝疲劳 Openscenegraph 三维可视化 

分 类 号：U270.6[机械工程—车辆工程]